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What is the only energy source that can be used to directly power muscle activity?
Wiki User
∙ 12y ago
ATP (Adenosine Tri-Phosphate) binds to the myosin head in a sarcomere( the smallest unit of contraction in a muscle), which cocks the head into position for the power stroke which shortens the sarcomere, and thus the muscle pulls its insertion towards its origin.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoATP
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The energy source that is directly responsible for muscle fiber contraction is?
ATP
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Carbohydrates
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ATP
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What is the source of chemical enegry used to power a muscle cell in your arm?
ATP is the source of chemical energy used to power a muscle cell in your arm.
